Hair brush barrel



FIG. 1 is a perspective view of a hair brush barrel showing my new design.

FIG. 2 is another perspective view thereof.

FIG. 3 is a front view or rear view or left side view or right side view thereof.

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

To show the clarity of my design, hair brush bristles have not been show.

The broken lines in the drawings depict features that form no part of the claimed design. 

CLAIM The ornamental design for a hair brush barrel, as shown and described. 